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Fix This Broken Encrypted Linux Block Device

In this activity you will resolve an issue that prevents a LUKS container from being opened successfully. You are working as a System Administrator and tasked with opening and mounting a corrupted LUKS container. Currently the device is not recognized as a LUKS container as shown by the isLuks command: ``` # cryptsetup -v isLuks /dev/loop0 Command failed with code -1 (wrong or missing parameters). ``` You will need to login to the remote system running CentOS Linux 7.7 and resolve the issue.

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Path Info

Clock icon Intermediate
Clock icon 15m
Clock icon Jan 31, 2020

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Table of Contents

  1. Challenge

    Repair the Corruption

    sudo cryptsetup luksHeaderRestore --header-backup-file /root/header.backup /dev/loop0
  2. Challenge

    Confirm the LUKS Container Is Intact

    sudo cryptsetup -v isLuks /dev/loop0
  3. Challenge

    Open the LUKS container Using the Keyfile in /root/lukskey

    sudo cryptsetup luksOpen /dev/loop0 encvol --key-file /root/lukskey
  4. Challenge

    Mount the Filesystem and Confirm the Data Is Readable

    Mount the filesystem:

    sudo mount /dev/mapper/encvol /mnt

    Read data:

    cat /mnt/secret

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